A shuttle bus slows down with an average acceleration of -2.4 m/s2. How long does it take the bus to slow from 9.0 m/s to rest?

Explanation:

Average acceleration is found by dividing the change in acceleration by the time.

The shuttle bus has an acceleration of -2.4 meters per square second. It slows from 9.0 meters per second to rest, or 0 meters per second. Therefore:

Substitute the values into the formula.

Solve the numerator.

We want to solve for t, the time. We have to isolate the variable. Let's cross multiply.

t is being multiplied by -2.4. The inverse of multiplication is division, so divide both sides by -2.4

It takes 3.75 seconds.

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